linux-kernel - Re: [PATCH v1 2/3] dt-bindings: riscv: convert plic bindings to json-schema

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Date:   Mon, 22 Mar 2021 16:38:04 +0100
From:   Geert Uytterhoeven <geert@...ux-m68k.org>
To:     Sagar Kadam <sagar.kadam@...ive.com>, Rob Herring <robh@...nel.org>
Cc:     Linux PWM List <linux-pwm@...r.kernel.org>,
        Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
        linux-riscv <linux-riscv@...ts.infradead.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@...r.kernel.org>,
        linux-clk <linux-clk@...r.kernel.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Thomas Gleixner <tglx@...utronix.de>,
        Jason Cooper <jason@...edaemon.net>,
        Marc Zyngier <maz@...nel.org>,
        Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>, Lee Jones <lee.jones@...aro.org>,
        Albert Ou <aou@...s.berkeley.edu>,
        Yash Shah <yash.shah@...ive.com>
Subject: Re: [PATCH v1 2/3] dt-bindings: riscv: convert plic bindings to json-schema

Hi Sagar, Rob,

(replying to an old email, as this one seems to be the most appropriate)

On Tue, Sep 22, 2020 at 10:34 PM Rob Herring <robh@...nel.org> wrote:
> On Thu, Sep 10, 2020 at 04:14:03PM +0530, Sagar Kadam wrote:
> > Convert device tree bindings for SiFive's PLIC to YAML format
> >
> > Signed-off-by: Sagar Kadam <sagar.kadam@...ive.com>

> > --- /dev/null
> > +++ b/Documentation/devicetree/bindings/interrupt-controller/sifive,plic-1.0.0.yaml

> > +
> > +  '#address-cells':
> > +    const: 0
> > +    description: Should be <0> or more.
>
> Drop. 'or more' is wrong. If there's a case with more, it will need to
> be documented.

Why do we have the "'#address-cells': const: 0" at all...

> > +required:
> > +  - compatible
> > +  - '#address-cells'

... and why is it required?

> > +  - '#interrupt-cells'
> > +  - interrupt-controller
> > +  - reg
> > +  - interrupts-extended
> > +  - riscv,ndev
> > +
> > +additionalProperties: false
> > +
> > +examples:
> > +  - |
> > +    plic: interrupt-controller@...0000 {
> > +      #address-cells = <0>;
> > +      #interrupt-cells = <1>;
> > +      compatible = "sifive,plic-1.0.0", "sifive,fu540-c000-plic";
> > +      interrupt-controller;
> > +      interrupts-extended = <
> > +        &cpu0_intc 11
> > +        &cpu1_intc 11 &cpu1_intc 9
> > +        &cpu2_intc 11 &cpu2_intc 9
> > +        &cpu3_intc 11 &cpu3_intc 9
> > +        &cpu4_intc 11 &cpu4_intc 9>;
> > +      reg = <0xc000000 0x4000000>;
> > +      riscv,ndev = <10>;
> > +    };

Gr{oetje,eeting}s,

                        Geert

--
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@...ux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds